Good news! She called me this morning and let me know that her boyfriend had been putting it off and had not actually taken anything to the cleaners yet! The benefits of procrastination!

Thanks everyone for your response. I didn't really even consider that it might damage the tent, but I guess it makes sense that it could be vulnerable as well. Either way, I'm glad to not have my gear be a test subject to see which item is most or least damaged by dry cleaning.

In the future, I'll have to be more careful about what I tell people to do with the gear, especially if they have never been camping before. Thanks again!